I just got my 6 Creedmoor bolt gun together - 8 twist 27" Benchmark - and I have a little H4350, but it is hard to find locally. What is the best alternative? I have AA4350 and IMR 4350, but they don't meter as well as Hodgdon. I have 8208 and Power Pro 2000mr to try as well. I had surgery to my...